Unformatted text preview: (b) If you have 4 marbles, two black and two white? 2. (6 points) Consider the grid of points shown below. Suppose that the starting point is labeled A you can go one step up or one step to the right at each move. This is continued until the point labeled B is reached. (a) How many different paths from A to C are possible? (b) If you have to pass two points, labeled C and D, how many different paths from A to B are possible? (c) How many different paths from A to B are possible?...
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 Summer '08
 ARNOLD,STEVENFDONG,YUEXIAO
 Probability, different paths

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